Nervous System

Question 1

The nervous system splits off into which two systems.

Answer 1

Central nervous system - Brain & Spinal Cord
Peripheral nervous system

Question 2

The Peripheral Nervous System branches into which 2 systems? Followed by what other systems?

Answer 2

Autonomic Nervous System
1. SNS 2. PSNS
Somatic Nervous System.

Question 3

The Sympathetic Division describes what happens to the following parts of the body during activation.

Answer 3

You can mention the body parts but not what is after.

Eyes: Dilate to let in more light for far vision
Salivary Glands: inhibit secretion
Heart: increases HR
Lungs: Dilates bronchioles
Stomach: Inhibits stomach activity
Liver: Stimulates glucose release
Intestines: inhibits activity
Bladder: Relaxes bladder muscles
Genitals: inhibits arousal

Question 4

Parasympathetic Nervous System, describe what happens to each part of the body upon activation.

Answer 4

Eyes: Constrict for near vision
Salivary Glands: Stimulates secretion
Heart: Decreases HR
Lungs: Constricts bronchioles
Stomach: Stimulates stomach activity
Liver: Inhibits glucose release
Intestines: Stimulates activity
Bladder: Constricts bladder muscles (emptying)
Genitals: Stimulates arousal

Question 5

What are the 2 Types of Neurotransmitters and what system does each belong to?

Answer 5

1. Noradrenaline - Sympathetic Nervous System (SNS)
2. Acetylcholine - Parasympathetic Nervous System (PNS)

Question 6

What are the two main receptor types?

Answer 6

1. Adrenergic Receptors:
   Alpha & Beta
2. Cholinergic Receptors:
   Muscarinic & Nicotinic

Question 7

Explain what
A1
A2
B1
B2
B3

Answer 7

A1: Constricts Peripheral blood vessels
A2: Controls release of neurotransmitters
B1: Increases heart rate & force of contraction
B2: Causes bronchodilation
B3: Cause lipolysis

Question 8

What do Muscarinic and Nicotinic receptors do?

Answer 8

Mimic the action of acetylcholine, enhancing the rest and digest function

Also responds to nicotine